{-
 Copyright 2022-23, Juspay India Pvt Ltd

 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License

 as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program

 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of

 the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
-}

module Environment where

import qualified Data.HashMap.Strict as HM
import qualified Data.Map.Strict as M
import Kernel.Prelude
import Kernel.Storage.Esqueleto.Config
import Kernel.Streaming.Kafka.Producer.Types (KafkaProducerTools)
import Kernel.Types.Common
import Kernel.Utils.App (getPodName, lookupDeploymentVersion)
import Kernel.Utils.Dhall (FromDhall)
import Kernel.Utils.IOLogging
import Kernel.Utils.Servant.Client (HttpClientOptions, RetryCfg)
import Kernel.Utils.Servant.SignatureAuth
import Kernel.Utils.Shutdown
import System.Environment (lookupEnv)
import Tools.Metrics
import Tools.Streaming.Kafka

data AppCfg = AppCfg
  { esqDBCfg :: EsqDBConfig,
    migrationPath :: [FilePath],
    autoMigrate :: Bool,
    port :: Int,
    bapId :: Text,
    bapURI :: BaseUrl,
    gatewayUrl :: BaseUrl,
    httpClientOptions :: HttpClientOptions,
    shortDurationRetryCfg :: RetryCfg,
    longDurationRetryCfg :: RetryCfg,
    authEntity :: AuthenticatingEntity',
    loggerConfig :: LoggerConfig,
    graceTerminationPeriod :: Seconds,
    kafkaConsumerCfgs :: KafkaConsumerCfgs,
    internalEndPointMap :: M.Map BaseUrl BaseUrl
  }
  deriving (Generic, FromDhall)

data AppEnv = AppEnv
  { port :: Int,
    bapId :: Text,
    bapURI :: BaseUrl,
    gatewayUrl :: BaseUrl,
    httpClientOptions :: HttpClientOptions,
    shortDurationRetryCfg :: RetryCfg,
    longDurationRetryCfg :: RetryCfg,
    authEntity :: AuthenticatingEntity',
    loggerConfig :: LoggerConfig,
    graceTerminationPeriod :: Seconds,
    esqDBEnv :: EsqDBEnv,
    isShuttingDown :: Shutdown,
    loggerEnv :: LoggerEnv,
    coreMetrics :: CoreMetricsContainer,
    kafkaConsumerEnv :: KafkaConsumerEnv,
    version :: DeploymentVersion,
    internalEndPointHashMap :: HM.HashMap BaseUrl BaseUrl,
    requestId :: Maybe Text,
    shouldLogRequestId :: Bool,
    sessionId :: Maybe Text,
    kafkaProducerForART :: Maybe KafkaProducerTools,
    url :: Maybe Text
  }
  deriving (Generic)

buildAppEnv :: AppCfg -> IO AppEnv
buildAppEnv AppCfg {..} = do
  podName <- getPodName
  version <- lookupDeploymentVersion
  loggerEnv <- prepareLoggerEnv loggerConfig podName
  coreMetrics <- registerCoreMetricsContainer
  isShuttingDown <- mkShutdown
  let requestId = Nothing
  shouldLogRequestId <- fromMaybe False . (>>= readMaybe) <$> lookupEnv "SHOULD_LOG_REQUEST_ID"
  let sessionId = Nothing
  let kafkaProducerForART = Nothing
  kafkaConsumerEnv <- buildKafkaConsumerEnv kafkaConsumerCfgs
  esqDBEnv <- prepareEsqDBEnv esqDBCfg loggerEnv
  let internalEndPointHashMap = HM.fromList $ M.toList internalEndPointMap
  let url = Nothing
  return $ AppEnv {..}

releaseAppEnv :: AppEnv -> IO ()
releaseAppEnv AppEnv {..} = do
  releaseLoggerEnv loggerEnv
  releaseKafkaConsumerEnv kafkaConsumerEnv

type FlowHandler = FlowHandlerR AppEnv

type FlowServer api = FlowServerR AppEnv api

instance AuthenticatingEntity AppEnv where
  getSigningKey = (.authEntity.signingKey)
  getSignatureExpiry = (.authEntity.signatureExpiry)
